Flora of North America species comparison

1–10 cm;

stipules membranous, soon ruptured, light becoming dark in age, silky-pilose, margins ciliate;

leaflets 5–17, scattered or congested, blades ovate-oblong to narrowly elliptic, 3–15 × 2–6 mm, apex acute or obtuse, surfaces pilose or sericeous.

3–28 cm;

stipules membranous, stramineous, silky-pilose abaxially;

leaflets fasciculate on rachis in 7–15 fascicles (32–70 leaflets), rarely with few verticillate, blades narrowly lanceolate, 4–25 × 2–6 mm, apex usually acute, rarely obtuse, surfaces villous.

(3–)5–18-flowered, subcapitate or slightly elongate.

9–35-flowered.

1–13 cm, axis 0.5–3(–4) cm in fruit, appressed-pilose to villous-hirsute;

bract ovate-lanceolate to lanceolate, margins involute, shaggy-pilose.

9–29(–36) cm, axis 3–16 cm in fruit, pilose;

bract narrowly lanceolate, pilose.

bright pink-purple or bluish purple, 15–19(–20) mm.

usually pink-purple, sometimes creamy white, 12–16 mm.

deeply campanulate, villous to shaggy-villous, hairs mixed blackish and white, appearing gray, 2 mm;

tube 5.5–7 mm, slightly swollen to strongly inflated, variably accrescent, ruptured by fruit or not, lobes 2–4.5 mm.

cylindric, long-villous, hairs white;

tube 5–6.5 mm, lobes 1.5–4(–6) mm.

enclosed in or exserted from calyx, erect, sessile or short-stipitate, ovoid to narrowly oblong, turgid to inflated, 6–15(–20) × 4–6.5 mm, bilocular, papery to nearly membranous, white- or black-villous.

ascending, minutely stipitate, ovoid to ovoid-oblong, 10–17 × 3–5 mm, subunilocular, both sutures sulcate, villous.

= 16.